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<meta name="description" content="A simple network configuration editor."/> 
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<!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
<title>Network Configuration</title>
</head>

<body>
  <!-- This top nav is not part of the sample code -->
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    <div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
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          <h1 class="mb-0 p-1 ">GoJS</h1>
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  <div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
    <div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
    <!-- * * * * * * * * * * * * * -->
    <!-- Start of GoJS sample code -->
    
    <script src="../release/go.js"></script>
    <div class="p-4 w-full">
  <script src="../extensions/Figures.js"></script>
    <script id="code">
    function init() {
      var $ = go.GraphObject.make;

      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            "linkingTool.direction": go.LinkingTool.ForwardsOnly,
            "undoManager.isEnabled": true
          });

      // when the document is modified, add a "*" to the title and enable the "Save" button
      myDiagram.addDiagramListener("Modified", function(e) {
        var button = document.getElementById("saveModel");
        if (button) button.disabled = !myDiagram.isModified;
        var idx = document.title.indexOf("*");
        if (myDiagram.isModified) {
          if (idx < 0) document.title += "*";
        } else {
          if (idx >= 0) document.title = document.title.substr(0, idx);
        }
      });

      myDiagram.nodeTemplateMap.add("Generator",
        $(go.Node, "Spot",
          { locationSpot: go.Spot.Center, selectionObjectName: "BODY" },
          new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Shape, "ACVoltageSource",
            {
              name: "BODY", stroke: "white", strokeWidth: 3, fill: "transparent", background: "darkblue",
              width: 40, height: 40, margin: 5,
              portId: "", fromLinkable: true, cursor: "pointer", fromSpot: go.Spot.TopBottomSides, toSpot: go.Spot.TopBottomSides
            }),
          $(go.TextBlock,
            { alignment: go.Spot.Right, alignmentFocus: go.Spot.Left, editable: true },
            new go.Binding("text").makeTwoWay())
        ));

      myDiagram.nodeTemplateMap.add("Connector",
        $(go.Node, "Spot",
          { locationSpot: go.Spot.Center, selectionObjectName: "BODY" },
          new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Shape, "Circle",
            {
              name: "BODY", stroke: null, fill: $(go.Brush, "Linear", { 0: "lightgray", 1: "gray" }), background: "gray",
              width: 20, height: 20, margin: 2,
              portId: "", fromLinkable: true, cursor: "pointer", fromSpot: go.Spot.TopBottomSides, toSpot: go.Spot.TopBottomSides
            }),
          $(go.TextBlock,
            { alignment: go.Spot.Right, alignmentFocus: go.Spot.Left, editable: true },
            new go.Binding("text").makeTwoWay())
        ));

      myDiagram.nodeTemplateMap.add("Consumer",
        $(go.Node, "Spot",
          {
            locationSpot: go.Spot.Center, locationObjectName: "BODY",
            selectionObjectName: "BODY"
          },
          new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
          $(go.Picture, "images/pc.jpg",
            {
              name: "BODY", width: 50, height: 40, margin: 2,
              portId: "", fromLinkable: true, cursor: "pointer", fromSpot: go.Spot.TopBottomSides, toSpot: go.Spot.TopBottomSides
            }),
          $(go.TextBlock,
            { alignment: go.Spot.Right, alignmentFocus: go.Spot.Left, editable: true },
            new go.Binding("text").makeTwoWay())
        ));

      myDiagram.nodeTemplateMap.add("HBar",
        $(go.Node, "Spot",
          new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
          {
            layerName: "Background",
            // special resizing: just at the ends
            resizable: true, resizeObjectName: "SHAPE",
            resizeAdornmentTemplate:
              $(go.Adornment, "Spot",
                $(go.Placeholder),
                $(go.Shape,  // left resize handle
                  {
                    alignment: go.Spot.Left, cursor: "col-resize",
                    desiredSize: new go.Size(6, 6), fill: "lightblue", stroke: "dodgerblue"
                  }),
                $(go.Shape,  // right resize handle
                  {
                    alignment: go.Spot.Right, cursor: "col-resize",
                    desiredSize: new go.Size(6, 6), fill: "lightblue", stroke: "dodgerblue"
                  }))
          },
          $(go.Shape, "Rectangle",
            {
              name: "SHAPE",
              fill: "black", stroke: null, strokeWidth: 0,
              width: 1000, height: 4,
              minSize: new go.Size(100, 4),
              maxSize: new go.Size(Infinity, 4)
            },
            new go.Binding("desiredSize", "size", go.Size.parse).makeTwoWay(go.Size.stringify),
            new go.Binding("fill"),
            { portId: "", toLinkable: true }),
          $(go.TextBlock,
            { alignment: go.Spot.Right, alignmentFocus: go.Spot.Left, editable: true },
            new go.Binding("text").makeTwoWay())
        ));

      myDiagram.linkTemplate =
        $(BarLink,  // subclass defined below
          {
            routing: go.Link.Orthogonal,
            relinkableFrom: true, relinkableTo: true,
            toPortChanged: function(link, oldport, newport) {
              if (newport instanceof go.Shape) link.path.stroke = newport.fill;
            }
          },
          $(go.Shape,
            { strokeWidth: 2 })
        );

      // start off with a simple diagram
      load();

      // initialize Palette
      myPalette =
        $(go.Palette, "myPaletteDiv",
          {
            nodeTemplateMap: myDiagram.nodeTemplateMap,
            layout:
              $(go.GridLayout,
                {
                  cellSize: new go.Size(2, 2),
                  isViewportSized: true
                })
          }
        );

      myPalette.model.nodeDataArray = [
        { "text": "Generator", "category": "Generator" },
        { "text": "Consumer", "category": "Consumer" },
        { "text": "Connector", "category": "Connector" },
        { "text": "Bar", "category": "HBar", "size": "100 4" },
      ];

      // remove cursors on all ports in the Palette
      // make TextBlocks invisible, to reduce size of Nodes
      myPalette.nodes.each(function(node) {
        node.ports.each(function(port) {
          port.cursor = "";
        });
        node.elements.each(function(tb) {
          if (tb instanceof go.TextBlock) tb.visible = false;
        });
      });

      // initialize Overview
      myOverview =
        $(go.Overview, "myOverviewDiv",
          {
            observed: myDiagram,
            contentAlignment: go.Spot.Center
          });
    }


    // A custom Link class that routes directly to the closest horizontal point of an "HBar" node.
    // If the regular node is too far to the left or right of the "HBar" node, the link connects
    // with the closest end of the "HBar" node.
    function BarLink() {
      go.Link.call(this);
    }
    go.Diagram.inherit(BarLink, go.Link);

    BarLink.prototype.computeSpot = function(from, port) {
      if (from && this.toNode && this.toNode.category === "HBar") return go.Spot.TopBottomSides;
      if (!from && this.fromNode && this.fromNode.category === "HBar") return go.Spot.TopBottomSides;
      return go.Link.prototype.computeSpot.call(this, from, port);
    }

    BarLink.prototype.getLinkPoint = function(node, port, spot, from, ortho, othernode, otherport) {
      if (!from && node.category === "HBar") {
        var op = go.Link.prototype.getLinkPoint.call(this, othernode, otherport, this.computeSpot(!from), !from, ortho, node, port);
        var r = port.getDocumentBounds();
        var y = (op.y > r.centerY) ? r.bottom : r.top;
        if (op.x < r.left) return new go.Point(r.left, y);
        if (op.x > r.right) return new go.Point(r.right, y);
        return new go.Point(op.x, y);
      } else {
        return go.Link.prototype.getLinkPoint.call(this, node, port, spot, from, ortho, othernode, otherport);
      }
    };

    BarLink.prototype.getLinkDirection = function(node, port, linkpoint, spot, from, ortho, othernode, otherport) {
      if (node.category === "HBar" || othernode.category === "HBar") {
        var p = port.getDocumentPoint(go.Spot.Center);
        var op = otherport.getDocumentPoint(go.Spot.Center);
        var below = op.y > p.y;
        return below ? 90 : 270;
      } else {
        return go.Link.prototype.getLinkDirection.call(this, node, port, linkpoint, spot, from, ortho, othernode, otherport);
      }
    };
    // end BarLink class


    // save a model to and load a model from JSON text, displayed below the Diagram
    function save() {
      document.getElementById("mySavedModel").value = myDiagram.model.toJson();
      myDiagram.isModified = false;
    }
    function load() {
      myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
    }
    window.addEventListener('DOMContentLoaded', init);
  </script>

<div id="sample">
  <div style="width: 100%; display: flex; justify-content: space-between">
    <div style="display: flex; flex-direction: column; margin-right: 2px">
      <div id="myPaletteDiv" style="flex-grow: 1; width: 100px; background-color: whitesmoke; border: solid 1px black"></div>
      <div id="myOverviewDiv" style="margin-top: 2px; width: 100px; height: 100px; background-color: lightgray; border: solid 1px black"></div>
    </div>
    <div id="myDiagramDiv" style="flex-grow: 1; height: 400px; border: solid 1px black"></div>
  </div>
  <div id="buttons">
    <button id="loadModel" onclick="load()">Load</button>
    <button id="saveModel" onclick="save()">Save</button>
  </div>
  <textarea id="mySavedModel" style="width:100%;height:300px">
{ "class": "go.GraphLinksModel",
  "nodeDataArray": [
{"key":0, "text":"Gen1", "category":"Generator", "location":"300 0"},
{"key":1, "text":"Bar1", "category":"HBar", "location":"100 100", "size":"500 4", "fill":"green"},
{"key":3, "text":"Cons1", "category":"Consumer", "location":"53 234"},
{"key":2, "text":"Bar2", "category":"HBar", "location":"0 300", "size":"600 4", "fill":"orange"},
{"key":4, "text":"Conn1", "category":"Connector", "location":"232.5 207.75"},
{"key":5, "text":"Cons3", "category":"Consumer", "location":"357.5 230.75"},
{"key":6, "text":"Cons2", "category":"Consumer", "location":"484.5 164.75"}
 ],
  "linkDataArray": [
{"from":0, "to":1},
{"from":0, "to":2},
{"from":3, "to":2},
{"from":4, "to":1},
{"from":4, "to":2},
{"from":5, "to":2},
{"from":6, "to":1}
 ]}
  </textarea>
</div>
    </div>
    <!-- * * * * * * * * * * * * * -->
    <!--  End of GoJS sample code  -->
  </div>
</body>
<!--  This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>
